Mama, if you're having that kind of sharp pain na nakakahinto ka sa lakad, please go see your OB right away or go to the hospital para ma-check agad, better safe than sorry sa pregnancy, especially when it's that intense. A few of my mum friends experienced random cramping during pregnancy, pero yung ganitong level ng pain na sobrang sakit, kailangan talaga ng doctor para malaman kung okay lang ang baby at ikaw. Don't wait pang next appointment mo, go na ngayon. Take care, mama!